Stayed for a week at Summers apartment. It was comfortable and very clean. didn't have any issues. I had one request of her if she could give some extra pillows & she followed through and gave me some extra pillows immediately.
Location is great. 10 minutes from BTS, true to its words. You can alternatively just get on the vehicle the building operates every 15-30m.
Air conditioner was top notch, literally freezing if you want it to be.
Pool & gym are amazing.
Only "con" I would say for North American person is the bed is kinda "hard" compared to what I am used to. I still slept fine but the first night it took a little bit of adjustment.
Overall A++ studio.